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Standards GB - Chinese national standards - Page 5196
Standards GB are Chinese national standards, which are issued by China's Standardization Administration Office (SAC).
Chinese national standards are used all over China commonly labeled as GB standards. They determine the united production requirements regarding product safety and quality .
GB standards are often modified or created according to the international standards of ISO, IEC or any other international level.
Although, they are largely harmonized, GB standards may differ from international standards .
Approximately 15% of all GB standards are obligatory and they can be identified according to the prefix GB, after which the code of the standards follows:
GB – Obligatory national standards
GB/T – Optional national standards
GB/Z – National steering technical document
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GB/T 8145-2021E
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Gum rosin
Standard published on 11.10.2021
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GB/T 8146-2022
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Test methods for rosin
Standard published on 12.10.2022
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GB/T 815-1988
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Round nuts with drilled holes in one face
Standard published on 24.6.1988
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GB/T 8151.1-2012
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Methods for chemical analysis of zinc concentrates - Part 1Determination of zinc content - Precipitate separation-Na2EDTA titrimetric method and extractive separation-Na2EDTA titrimetric method
Standard published on 31.12.2012
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GB/T 8151.10-2012
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Methods for chemical analysis of zinc concentrates - Part 10Determination of tin content - Hydride generation-atomic fluorescence spectrometry
Standard published on 31.12.2012
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GB/T 8151.11-2012
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Methods for chemical analysis of zinc concentrates - Part 11 Determination of antimony content - Hydride generation-atomic fluorescence spectrometry
Standard published on 31.12.2012
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GB/T 8151.12-2012
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Methods for chemical analysis of zinc concentrates - Part 12 Determination of sliver content - The flame atomic absorption spectrometric method
Standard published on 31.12.2012
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GB/T 8151.13-2012
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Methods for chemical analysis of zinc concentrates - Part 13 Determination of germanium content - Hydride generation-atomic fluorescence spectrometry and the phenyl fluorone spectrophptometric method
Standard published on 31.12.2012
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GB/T 8151.14-2012
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Methods for chemical analysis of zinc concentrates - Part 14 Determination of nickel content - The flame atomic absorption spectrometric method
Standard published on 31.12.2012
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GB/T 8151.15-2005
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Methods for chemical analysis of zinc concentrates-Determination of mercury content-Atomic fluorescence spectrometry method
Standard published on 26.7.2005
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